---
id: kb-2026-00492
title: Endangered Species
schema_type: TechArticle
category: science
language: en
confidence: medium
last_verified: "2026-05-28"
created_date: "2026-05-22"
generation_method: ai_assisted
ai_models:
  - claude-opus
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-science-001
    statement: >-
      The IUCN Red List uses categories such as Critically Endangered, Endangered, Vulnerable, Near
      Threatened, Least Concern, Extinct in the Wild, and Extinct to communicate extinction risk.
    source_title: IUCN Red List Categories and Criteria
    source_url: https://www.iucnredlist.org/resources/categories-and-criteria
    confidence: medium
  - id: fact-science-002
    statement: >-
      The IPBES Global Assessment reported that around one million animal and plant species are
      threatened with extinction.
    source_title: Global Assessment Report on Biodiversity and Ecosystem Services
    source_url: https://ipbes.net/global-assessment
    confidence: medium
  - id: fact-science-003
    statement: >-
      The U.S. Fish and Wildlife Service describes bald eagle recovery as a conservation success
      that led to removal from the endangered species list in 2007.
    source_title: Bald eagle recovery
    source_url: https://www.fws.gov/story/bald-eagle-recovery
    confidence: medium
completeness: 0.88
known_gaps:
  - >-
    Certain sub-topics are covered at a general level; specialized edge cases and nuanced
    applications may not be fully addressed
disputed_statements: []
primary_sources:
  - id: ps-endangered-species-1
    title: IUCN Red List Categories and Criteria
    type: standard
    year: 2026
    institution: IUCN
    url: https://www.iucnredlist.org/resources/categories-and-criteria
  - id: ps-endangered-species-2
    title: Global Assessment Report on Biodiversity and Ecosystem Services
    type: assessment_report
    year: 2019
    institution: IPBES
    url: https://ipbes.net/global-assessment
  - id: ps-endangered-species-3
    title: Bald eagle recovery
    type: government_report
    year: 2026
    institution: U.S. Fish and Wildlife Service
    url: https://www.fws.gov/story/bald-eagle-recovery
secondary_sources: []
updated: "2026-05-28"
---
## TL;DR
Endangered species are species facing elevated extinction risk. Public claims should rely on conservation standards and assessment reports, not broad unsourced lists or inspirational quotations.

## Core Explanation
The IUCN Red List provides categories for describing extinction risk. Global assessments such as IPBES summarize biodiversity trends and human drivers. Conservation outcomes can improve when laws, habitat protection, pollution controls, and recovery planning are sustained over time.

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